The Mach1 MV 120 is a high performance ski boot designed for advanced to expert level skiers with medium volume feet who are looking for a comfortable but precise fit and a high level of customization. Grounded in the fundamentals of ski boot design, the MV 120 features T-Drive technology that allows the boot to function in a much more efficient way. Developed with an anatomically shaped shell and liner, the C.A.S. technology provides a great fit right out of the box but allows the boots to be fully customized if need be.